(9S,12S)-12-[N-(tert-butyloxycarbonyl)amino]-2,11-dioxo-4-methoxy-9-methoxycarbonyl-10-azatricyclo[12.2.2.1^3,7]nonadeca-3,5,7(19),14,16,17-hexaene | 152429-89-5

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: (9S,12S)-12-[N-(tert-butyloxycarbonyl)amino]-2,11-dioxo-4-methoxy-9-methoxycarbonyl-10-azatricyclo[12.2.2.1^3,7]nonadeca-3,5,7(19),14,16,17-hexaene
• 英文别名: 12-(tert-butoxycarbonylamino)-4-methoxy-11-oxo-2-oxa-10-azatricyclo[12.2.2.1*3,7*]nonadeca-1(17),3(19),4,6,14(18),15-hexaene-9-carboxylic acid methyl ester；methyl (9S,12S)-4-methoxy-12-[(2-methylpropan-2-yl)oxycarbonylamino]-11-oxo-2-oxa-10-azatricyclo[12.2.2.13,7]nonadeca-1(16),3,5,7(19),14,17-hexaene-9-carboxylate
• CAS: 152429-89-5
• 化学式: C₂₅H₃₀N₂O₇
• 分子量: 470.522
• InChiKey: LCLJHSYGSMSFPC-OALUTQOASA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  34
• 可旋转键数：
  6
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  112
• 氢给体数：
  2
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  (9S,12S)-12-[N-(tert-butyloxycarbonyl)amino]-2,11-dioxo-4-methoxy-9-methoxycarbonyl-10-azatricyclo[12.2.2.1^3,7]nonadeca-3,5,7(19),14,16,17-hexaene 在 lithium hydroxide 作用下， 以 四氢呋喃 、 甲醇 、 水 为溶剂， 反应 6.0h， 以94%的产率得到(9S,12S)-12-tert-Butoxycarbonylamino-4-methoxy-11-oxo-2-oxa-10-aza-tricyclo[12.2.2.13,7]nonadeca-1(17),3,5,7(19),14(18),15-hexaene-9-carboxylic acid
  参考文献：
  名称：

  RA-VII和脱氧布瓦丁的四肽亚基的关键类似物。

  摘要：

  描述了脱氧布瓦丁（1）和RA-VII（2）的类似物3和4的合成和评估，它们在四肽亚基中有修饰。与天然产物不同并且类似于我们的先前公开内容，试剂3和4以单个存在D-Ala-Ala-NMe-Tyr（OMe）-Ala四肽亚基的（Gly）4和（Gly）3取代。刚性构象，其中的中央环异二酪氨酸酰胺采用其优选的反式立体化学，并且发现两者均具有生物惰性。

  DOI：

  10.1016/0968-0896(96)00151-4
• 作为产物：
  描述：

  盐酸左旋多巴甲酯 在 palladium on activated charcoal copper(I) oxide 、 磷酸 、 氢气 、 potassium carbonate 、 sodium nitrite 作用下， 以 四氢呋喃 、 甲醇 、 水 、 二甲基亚砜 、 N,N-二甲基甲酰胺 为溶剂， 生成 (9S,12S)-12-[N-(tert-butyloxycarbonyl)amino]-2,11-dioxo-4-methoxy-9-methoxycarbonyl-10-azatricyclo[12.2.2.1^3,7]nonadeca-3,5,7(19),14,16,17-hexaene
  参考文献：
  名称：

  Synthesis of cycloisodityrosine revisited: A selective ring forming process

  摘要：

  Cycloetherification of dipeptide (L,L) N-Boc-(4-fluoro-3-nitro)Phe-Dopa methyl ester (11) gave exclusively the (m,p)-cyclophane (14) at the expense of the 15-membered (p,p)cyclophane (16). An efficient synthesis of cycloisodityrosine was consequently developed (C) 1998 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4039(97)10664-5

文献信息

• Synthesis of (9<i>R</i>,12<i>S</i>)- and (9<i>S</i>,12<i>S</i>)-Cycloisodityrosine and Their <i>N</i>-Methyl Derivatives
  作者：Dale L. Boger、Jiacheng Zhou、Robert M. Borzilleri、Seiji Nukui、Steven L. Castle

  DOI：10.1021/jo961346o

  日期：1997.4.1

  Full details of the synthesis of (9R,12S)- and (9S,12S)-cycloisodityrosine and their N-methyl derivatives are detailed based on an intramolecular nucleophilic aromatic substitution reaction for formation of the key biaryl ether with 14-membered ring macrocyclization. Their comparison with prior samples and the documentation of a facile C9 epimerization within the natural 9S series are described.

  基于分子内亲核芳族取代反应以形成具有14元环大环化的关键联芳基醚，详细描述了（9R，12S）-和（9S，12S）-环异酪氨酸及其N-甲基衍生物的合成的详细信息。描述了它们与先前样品的比较以及天然9S系列中C9差向异构酶的简便记录。
• Total synthesis of (+)-Piperazinomycin
  作者：Dale L. Boger、Jiacheng Zhou

  DOI：10.1021/ja00077a047

  日期：1993.12

  A concise total synthesis of (+)-piperazinomycin (1), a novel naturally occurring macrocyclic piperazine possessing antimicrobial and antifungal activity, is detailed with implementation of an improved Ullmann macrocyclization reaction conducted on a diketopiperazine (53%)

  (+)-哌嗪霉素 (1) 是一种具有抗微生物和抗真菌活性的新型天然大环哌嗪的简明全合成，详细介绍了对二酮哌嗪 (53%) 进行的改进的 Ullmann 大环化反应的实施
• N-Desmethyl Derivatives of Deoxybouvardin and RA-VII: Synthesis and Evaluation
  作者：Dale L. Boger、Jiacheng Zhou

  DOI：10.1021/ja00133a010

  日期：1995.7

  The synthesis of the complete set of seven N-desmethyl derivatives of RA-VII (8) are described. Thus, the synthesis of the four 14-membered cycloisodityrosine derivatives 21-24 and their coupling with the two tetrapeptides 32 and 33 followed by formation of the 18-membered ring with macrocyclization provided the full set of seven desmethyl derivatives 14-20 of RA-VII (8). The solution phase conformational properties of 8 and 14-20 were examined by 1D and 2D H-1 NMR to reveal the role of N-methylation on the key conformational aspects of the natural agents. In contrast to each of the simple cycloisodityrosine derivatives 21-24 which adopt a single, rigid solution conformation possessing a secondary or tertiary trans amide central to the 14-membered ring, the natural agents including 8 adopt a single predominant solution conformation (83-88%) that corresponds closely to the X-ray structure conformation which possesses an inherently disfavored cis C-30-N-29 tertiary amide central to the 14-membered cycloisodityrosine subunit. Moreover, this cis amide is the predominant conformation (85-95%) observed with N-29-desmethyl RA-VII (14) indicating that even a secondary C-30-N-29 amide adopts this inherently disfavored cis amide stereochemistry. The minor conformation of 8 observed in solution (12-17%) is shown to be derived from a minor cis C-8-N-9 tertiary amide which was not observed with its conversion to a secondary amide. Both N-9-desmethyl RA-VII (15) and N-9,N-29-desmethyl RA-VII (18) adopt exclusively a single solution conformation that corresponds to the major solution conformations of 8 and 14. This conformation contains a characteristic cis C-30-N-29 amide central to a type VI beta-turn and the cycloisodityrosine subunit, a trans C-8-N-9 amide central to a typical type II beta-turn capped with a tight Ala(4)-NH-O=C-Ala(1) hydrogen bond, and a trans C-14-N-15 N-methyl amide. In sharp contrast, removal of the N-15 methyl group within 16, 17, 19, and 20 results in the adoption of solution conformations possessing the inherently favored trans C-30-N-29 amide central to the cycloisodityrosine (14)-membered subunit. Thus, the N-15-methyl group within 8 is responsible for the agents adoption of the disfavored cis C-30-N-29 amide central to the cycloisodityrosine subunit. Importantly, preceding studies have defined the cycloisodityrosine subunit of 8 as the pharmacophore and, in a reversal of the initially assigned roles, revealed that it is the tetrapeptide housed in the 18-membered ring that induces and maintains the rigid, normally inaccessible cis C-30-N-29 amide conformation within the 14-membered cycloisodityrosine subunit. The studies detailed herein reveal that it is the N-15-methyl group that induces this conformational preference for the disfavored cis C-30-N-29 amide and that its removal results in a major conformational change with adoption of the trans C-30-N-29 amide and a loss of biological activity.Thus, the N-15-methyl group is essential for maintenance of the conformational and biological properties of 8; the N-9-methyl group is not essential, and its removal leads to exclusive population of a single biologically active conformation; and the N-29-methyl group once thought essential td the adoption of the C-30-N-29 cis amide is not essential, and its removal does not alter the conformational or biological properties of 8.
• Improved Synthesis of L,L-Cycloisodityrosine Subunit of Antitumor Agents Deoxybouvardin and RA-VII
  作者：Samir Ghosh、A. Sanjeev Kumar、G. N. Mehta、R. Soundararajan

  DOI：10.1080/00397910903245166

  日期：2010.7.27

  A facile synthesis of the core cycloisodityrosine 14-membered ring system is detailed from commercially available L-tyrosine through a novel synthetic approach to aryl boronic acid 12 via intramolecular cyclization.
• Total Synthesis of an Antitumor Agent RA-VII via an Efficient Preparation of Cycloisodityrosine
  作者：Antony Bigot、Marie Elise Tran Huu Dau、Jieping Zhu

  DOI：10.1021/jo990432w

  日期：1999.8.1

  Details of efficient syntheses of (9S, 12S)-cycloisodityrosine (6) and a concise total synthesis of RA-VII(1) were described. An intramolecular SNAr-based cycloetherification reaction was employed as the key ring-closure step for construction of the illusive 14-membered m,p-cyclophane. Treatment of methyl N-[N-(tert-butyloxycarbonyl)-L(3-hydroxy-4-methoxyphenylalanyl)]-L-4-fluoro-3-nitrophenylalaninate ((9S,12S)-10) with potassium carbonate in DMSO at room temperature provided a mixture of two atropdiastereomers 20a and 20b in 75% yield that were transformed into cycloisodityrosine 6 in good overall yield. Furthermore, a size-selective ring-forming process was established for methyl N-[N-(tert-butyloxycarbonyl)-L-(3,4-dihydroxyphenlalanyl)]-L-4-fluoro-3- nitrophenylalaninate ((9S,12S)-11). Thus, cyclization of 11 (K2CO3, DMSO, rt), followed by in situ methylation, gave exclusively the 14-membered m,p-cyclphane 20a and 20b without competitive formation of the alternative 15-membered p,p-cyclophane. The selective ring-forming process allowed us to develop one of the shortest and the most efficient synthesis of cycloisodityrosine to date. Computational studies have shown that it was the elimination, but not the addition, step that determined the ring-size selectivity observed in the cyclization of substrate 11. Coupling of 6 with L-N-Boc-Ala (51) proceeded efficiently to provide the corresponding tripeptide 52 that, after removal of the N-Boc function, was allowed to react with another tripeptide 53 to afford the hexapeptide 50 in good overall yield. Saponification followed by liberation of amino function from 50 gave the seco-acid, whose cyclization (DPPA, DMF, NaHCO3) afforded the natural product RA-VII (1).